Fireplace.



No. 664,639. Patentednec. 25, |900. w. c. Homes.

FIBEPLACE.

(Application led June 26, 1900,)

(No Model.)

UNTTED STATES PATENT OFFICE.

WILLIAM C. HOLMES, OF ATLANTA, GEORGIA.

FIREPLACE.

SPECIFICATION forming part of Letters Patent No. '664.639, dated December 25, 1900.

Application tiled June 26,1900. Serial No. 21,676. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM C. HOLMES, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented new and useful Improvements in Open Grat-es, of which the following is a specification.

Hy invention relates to that class of open grates which are provided with a chambered back or casing for the passage of air which is heated therein and then employed for heating the same or an adjoining room.

It is my purpose to provide a simple and inexpensive construction by which a higher temperature may be imparted to the air by retarding its passage through said casing, and thereby giving it a longer exposure to the heat, and by causing it to have an increased surface contact with the heated walls.

It is my object also to provide an open tireplace orgrate with an air-heating back having a novel construction by which the combustion of closely-packed fuel is promoted and whereby the back, which is more directly exposed to the iire, can easily be renewed should it burn out or become injured from any other cause, provision being made whereby it can be sealed against the penetration of smoke or fire-gases into the air-heating chamber.

My invention also comprises other novel and useful features, all of which will be fully described in the following specification and then particularly pointed out and defined in the claims at the end thereof.

For the purposes of this description reference is had to the accompanying drawings, in which- Figure l is a front elevation of a fireplace having my invention. Fig. 2 is a vertical section of the same, taken vfrom front to rear. Fig. 3 is a rear elevation, partly in vertical section, to show the interior of the casing. Fig. et is a perspective View of the frame of the casing removed from the replace. Fig. 5 is a perspective view of the main wall of the casing removed from the frame.

The reference-numeral l in said drawings indicates the frame of the casing, which is of rectangular form and adapted to be set in the back of an open fireplace or grate 2, the upper horizontal side of the frame being inclined forward, as shown in Figs. 2 and et, to

assist the draft. i In the rear of the frame is a chamber or casing 3, having at one of its lower angles an air-inlet 4 and at the diago- 55 In the vertical 6o when the wall 6 is inserted in place in order 65 to seal the joint and prevent the passage of smoke, gases, or odors.

Projecting from the rear face of the main wall 6 are two partition-walls 9 and 10, the

former a little below and parallel with the 7o top of the main wall, and the latter at some distance above the lower edge of said wall and approaching the latter as said partition lO approaches the end farthest from the air` inlet. tion l0 abuts on the end wall 12 of the casing directly over the inlet 4 and its edge against the rear Wall, thus forming a passage 13, which, as shown in Fig. 3, constantly contracts as it departs from the inlet. end of the partition terminates at such a point as to permit the air to pass around it and ascend, as denoted by the arrow in Fig. l. Between the two partitions 9 and l0 are arranged When in place, the end of the parti- The other 8o serrated strips 14, the openings or passages passage communicating with the inlet 4 will\` cause the entering air to be retarded some- 9 what, and thus remain longer exposed to the heat of the walls surrounding it, While the staggered openings in the strips 14 will give it a greater surface contact in a given space.

This outlet communicates 9o The main wall 6 may be fastened, when first roo inserted in the frame, by any suitable devices, such as the buttons 17. (Shown in Fig. l.) The outer face of this wall is provided with a series of channels or bars 18, which will give draft to the fire in case the coke or other fuel burn out or be otherwise injured in such manner as to require renewal, it can easily Ybe removed and a new wall inserted at a verysmall expense.

l. In an open fireplace, the combination with a frame having a rearwardly-projecting casing provided with an inlet and outlet for air, of a main wall adapted to be set in said frame, and having partitions proj eoting from its rear face to form air-passages, a series of serrated strips arranged between said Walls forming inlet and outlet passages, and ha'i`TV ing their serrated openings in staggered relation, substantially as described.

' 2. In an open fireplace orgrate, the combination with a frame having a rearwardly-projecting casing provided with an air inlet and outlet, of a main wall adapted to be secured within said frame and provided with a series of channels on the outer face thereof, a partition secured to the inner face of said wall and forming a longitudinally-extending air-passage communicating with said outlet, and an inclined partition secured to the inner face of said wall and forming a contracted longitudinally-extending air-passage communicating with said inlet, substantially as described.

3. In an open fireplace or grate, the combi- -nation with a frame having a rearwardly-projecting casing provided with an air inlet and Y outlet, of a main wall adapted to be secured tition secured to the inner face ofY said wall and forming a longitudinally-extending air- Y passage communicating with said outlet, an

, inclined partition secured to the inner face of said wall and forming a contracted longitudi- Y i nally-extending air-passage communicating with said inlet, and a series of strips arranged between said partitions and provided with serrated openings, substantially as de-v scribed.

4. In an open fireplace, the combination with a frame having a rearwardly-projecting casing provided with au inlet and outlet for air, of a main Wall set in a rabbet in said Vfiane provided with half-round channels for mortar registering with like channels in theY inner face of the frame, a partition secured to the inner face of said main Wali near the top thereof and forming a longitudinallyex- Y tending ai r-passage communicating with said outlet, an inclined partition secured to the inner face of said main wall near the bottom Y thereof and forming a contracted longitudi-l nally-extending air-passage, and a series of stri ps secured to the inner face of'said main wall, between said partitions and provided with serrated openings, substantially as dc-v scribed. Y

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM C. HOLMES.

Witnesses:

W. B. WILKERSON, ROBERT IvEY. 

